New 257 STW

The first powder we tried was Ramshot Magnum 87gr only gave us 3950fps and .6 MOA. I'm thinking about trying Retumbo and H869 does anyone have any experince with these powders and the 257 STW.
DR B

__________________
Baylor

“ Three rules of Life: If you're too open-minded, your brains will fall out. Don't worry about what people think; they don't do it very often. Artificial intelligence is no match for natural stupidity.

What bullet are you getting that speed with? Does the RS Magnum powder seem to burn pretty clean? I would like to try it in my bigger guns but can't find it for sale anywhere in 200 miles. I will have to pay a haz mat if I end up ordering it. I just want to learn more about it before I order it.

__________________Some kids want to be a fireman or a doctor to help people. I wanted to be a gunsmith.

HG, If you can get a couple buddies together and buy powder, give Graf and Sons a try. Grafs.com, we buy powder in bulk usually 45 to 50 pounds. My local dealers cant beat their price and at 32 pounds they knock off the haz mat fee.

Ramshot magnum works very very well in the 257 stw. Mine likes 84 grains and a 100 grain bt good for 3900 fps out of a 30 inch lilja. Another great load is 80 grains of magnum and the 115 barnes triple shock good for 3600 fps. With the big 257 you have to very careful of powder bridging with extruded powder. I tried r25 once with mild loads and blew primers out. I would stick with ball powders and play with your seating depth. And yes ramshot magnum burns very clean. I would use the fed215 primer exclusively as it is the hottest on the market and a healthy dose of any ball powder needs some good ignition. Cheers!

“ Three rules of Life: If you're too open-minded, your brains will fall out. Don't worry about what people think; they don't do it very often. Artificial intelligence is no match for natural stupidity.